set(Boost_USE_STATIC_LIBS ${PROJECT_STATIC_LINK})

if(PROJECT_ENABLE_BOOST)
  add_definitions(-DPROJECT_ENABLE_BOOST)

  if(PROJECT_ENABLE_LIBBITCOIN_SYSTEM)
    set(BOOST_MAJOR_VERSION ${BOOST2_MAJOR_VERSION})
    set(BOOST_MINOR_VERSION ${BOOST2_MINOR_VERSION})
    set(BOOST_PATCH_VERSION ${BOOST2_PATCH_VERSION})
  endif()

  set(BOOST_ROOT ${PROJECT_EXTERNAL_BUILD_ROOT})
  set(BOOST_INCLUDE_DIR ${BOOST_ROOT}/include/boost-${BOOST_MINOR_VERSION}_${BOOST_MINOR_VERSION})

  set(PROJECT_EXTERNAL_CMAKE_FLAGS
    ${PROJECT_EXTERNAL_CMAKE_FLAGS}
    -DBUILD_SHARED_LIBS=${PROJECT_BUILD_SHARED_LIBS}
    -DBOOST_INCLUDE_DIR=${BOOST_INCLUDE_DIR}
    -DBOOST_ROOT=${BOOST_ROOT}
  )

  if(PROJECT_BUILD)
    find_package(Boost ${BOOST_MAJOR_VERSION}.${BOOST_MINOR_VERSION}.${BOOST_PATCH_VERSION} EXACT
      REQUIRED
      COMPONENTS
        atomic
        chrono
        date_time
        filesystem
        iostreams
        locale
        log
        log_setup
        program_options
        random
        regex
        serialization
        system
        thread
        wserialization
    )

    include_directories(BEFORE SYSTEM
      ${Boost_INCLUDE_DIRS}
    )

    link_libraries(
      ${Boost_LIBRARIES}
    )
  elseif(NOT PROJECT_IS_MINGW OR CMAKE_HOST_WIN32)
    if(PROJECT_CMAKE_BUILD_TYPE STREQUAL "Debug")
      set(BOOST_BUILD_TYPE_LOWER debug)
    else()
      set(BOOST_BUILD_TYPE_LOWER release)
    endif()

    if(PROJECT_IS_ARM64)
      set(BOOST_ARCH arm)
    else()
      set(BOOST_ARCH x86)
    endif()

    if(PROJECT_STATIC_LINK)
      set(BOOST_LINK static)
    else()
      set(BOOST_LINK "static,shared")
    endif()

    set(BOOST_BUILD_ARGS
      --openssldir=$ENV{OPENSSL_ROOT_DIR}
      --prefix=${PROJECT_EXTERNAL_BUILD_ROOT}
      address-model=64
      architecture=${BOOST_ARCH}
      cxxflags=-std=c++${CMAKE_CXX_STANDARD}
      cxxstd=${CMAKE_CXX_STANDARD}
      define=BOOST_ASIO_HAS_STD_STRING_VIEW
      define=BOOST_SYSTEM_NO_DEPRECATED
      link=${BOOST_LINK}
      linkflags=-std=c++${CMAKE_CXX_STANDARD}
      threading=multi
      variant=${BOOST_BUILD_TYPE_LOWER}
    )

    if(PROJECT_ENABLE_LIBBITCOIN_SYSTEM)
      set(BOOST_URL_HASH SHA256=7bd7ddceec1a1dfdcbdb3e609b60d01739c38390a5f956385a12f3122049f0ca)
    else()
      set(BOOST_URL_HASH SHA256=be0d91732d5b0cc6fbb275c7939974457e79b54d6f07ce2e3dfdd68bef883b0b)
    endif()

    ExternalProject_Add(boost_project
      PREFIX external
      URL ${PROJECT_3RD_PARTY_DIR}/boost_${BOOST_MAJOR_VERSION}_${BOOST_MINOR_VERSION}_${BOOST_PATCH_VERSION}.tar.gz
      URL_HASH ${BOOST_URL_HASH}
      BUILD_IN_SOURCE 1
      LIST_SEPARATOR |
      CONFIGURE_COMMAND ./bootstrap.sh
        --with-libraries=atomic,chrono,date_time,filesystem,iostreams,locale,log,program_options,random,regex,serialization,system,test,thread
      BUILD_COMMAND
        ./b2
        -j1
        ${BOOST_BUILD_ARGS}
      INSTALL_COMMAND
        ./b2
        -j1
        ${BOOST_BUILD_ARGS}
        install
    )

    set(PROJECT_DEPENDENCIES 
      ${PROJECT_DEPENDENCIES}
      boost_project
    )
  endif()
endif()